A. A. v. J. Groenewald M. Sc.

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1. The species composition and relative population density of an oligotrophic lowveld impoundment are discussed. 2. 38% by number and 65% by weight of the total population sample consisted of Tilapia. 3. The population is completely under-exploited, but no serious over-population has developed and young-of-the-year Tilapia are relatively scarce. Available(More)
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